{
    "products": [
        {
            "slug": "proton-mail",
            "name": "Proton Mail",
            "kind": "web",
            "website": "https://proton.me/mail",
            "page": "https://listme.name/software/proton-mail",
            "tagline": "Encrypted email from a Swiss-based company with a free plan",
            "summary": "Proton Mail is an end-to-end encrypted email service from Proton, which its site describes as Swiss-based. It offers a free plan, paid Mail Plus and Proton Unlimited plans, and apps for iOS, Android, macOS, Windows and Linux alongside its web app.",
            "platforms": [
                "web",
                "ios",
                "android",
                "macos",
                "windows",
                "linux"
            ],
            "pricing": "freemium",
            "price_note": "Free plan; paid Mail Plus and Proton Unlimited add storage",
            "free_to_use": true,
            "open_source": true,
            "license": "GPL-3.0",
            "source": "https://github.com/ProtonMail/WebClients",
            "strengths": [
                "Zero-access encryption, as described on its site",
                "Free plan and apps on every major platform",
                "Web client published under GPL-3.0"
            ],
            "limits": [
                "Custom domains are listed only on paid plans",
                "Extra storage needs Mail Plus or Unlimited"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "Proton Mail encrypts messages between Proton users end to end and uses zero-access encryption for stored mail, according to its site. The service runs on the web and in apps for iOS, Android, macOS, Windows and Linux. It is part of a wider Proton ecosystem that includes calendar, drive, VPN and password manager products on one account.\n\nThe free plan is listed at 0 dollars on the pricing page. Mail Plus and Proton Unlimited add storage, custom domains and extra email addresses, and custom domains appear only on the paid plans. Proton publishes its web client source on GitHub under GPL-3.0, and the company says it is funded entirely by paying subscribers."
        },
        {
            "slug": "tuta",
            "name": "Tuta",
            "kind": "web",
            "website": "https://tuta.com/",
            "page": "https://listme.name/software/tuta",
            "tagline": "Encrypted email and calendar with a free plan and open clients",
            "summary": "Tuta is an encrypted email, calendar and contacts service with a free plan. It uses end-to-end encryption with post-quantum cryptography, stores data on servers in Germany, and publishes its client code under GPLv3.",
            "platforms": [
                "web",
                "ios",
                "android",
                "windows",
                "macos",
                "linux"
            ],
            "pricing": "freemium",
            "price_note": "Free plan with 1 GB; paid plans for more storage and domains",
            "free_to_use": true,
            "open_source": true,
            "license": "GPL-3.0",
            "strengths": [
                "Free plan with end-to-end encrypted mail and calendar",
                "Clients published under GPLv3",
                "Servers based in Germany"
            ],
            "limits": [
                "Free plan includes only 1 GB of storage",
                "Custom domains need a paid plan"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "Tuta provides email, calendar and contacts, with end-to-end encryption that covers the address book and calendar as well as messages. Its apps are listed for web, Windows, macOS, Linux, Android and iOS, and the free plan includes 1 GB of storage. The service uses post-quantum cryptography, according to its site.\n\nPaid plans add storage, custom domains and extra email addresses, and the top plan offers 500 GB. Tuta says all of its clients are open source and published under GPLv3, and its servers are in Germany. The company also states that it runs on renewable energy."
        }
    ],
    "differences": [],
    "shared_rankings": [
        {
            "list": "secure-email-providers",
            "name": "Secure email providers",
            "page": "https://listme.name/best/secure-email-providers",
            "of": 10,
            "results": [
                {
                    "product": "proton-mail",
                    "rank": 1,
                    "score": 92,
                    "verdict": "Zero-access encryption, a free plan and apps on every major platform, with the web client published under GPL-3.0. Custom domains and extra storage need the paid plans.",
                    "best_for": "Private email with a free plan and apps",
                    "spec": {
                        "platforms": "Web, iOS, Android, macOS, Windows, Linux",
                        "encryption": "End-to-end and zero-access",
                        "hosting": "Switzerland (company)",
                        "free_plan": true
                    }
                },
                {
                    "product": "tuta",
                    "rank": 2,
                    "score": 90,
                    "verdict": "End-to-end encrypted mail and calendar on a free plan with post-quantum encryption, open-source clients under GPLv3 and servers in Germany. The free plan has only 1 GB of storage.",
                    "best_for": "Encrypted email and calendar on a free plan",
                    "spec": {
                        "platforms": "Web, iOS, Android, Windows, macOS, Linux",
                        "encryption": "End-to-end, post-quantum",
                        "hosting": "Germany (servers)",
                        "free_plan": true
                    }
                }
            ]
        }
    ],
    "ranks_higher_in_closest_shared_list": "proton-mail",
    "page": "https://listme.name/compare/proton-mail-vs-tuta",
    "json": "https://listme.name/api/v1/compare/proton-mail-vs-tuta.json",
    "notes": [
        "Scores are editorial and only comparable inside one list. Products with connected_to_publisher true receive a disclosed ranking lift: https://listme.name/methodology"
    ],
    "source": "https://listme.name",
    "license": "Free to read and cite with attribution to listme.name.",
    "docs": "https://listme.name/developers"
}